the agent canceled the request because it was requested to do so by NetworkManager
unknown or unclassified error
the connection for which secrets were requested is invalid
the agent cannot find any secrets for this connection
the caller (ie, NetworkManager) is not authorized to make this request
the request was canceled by the user
#NMSecretAgentError values are passed by secret agents back to NetworkManager when they encounter problems retrieving secrets on behalf of NM. They correspond to errors in the "org.freedesktop.NetworkManager.SecretManager" namespace.
Client APIs such as nm_client_activate_connection() will not see these error codes; instead, the secret agent manager will translate them to the corresponding #NMAgentManagerError codes.